The calcite deposits are derived from the recrystallization of the carbonatite as a result of the weathering, eluviation of the fault, and the thermal contact activity and the metamorphism.
There is siderite, iron dolomite , calcite, Barite, pyrite, anatase, rutile, piece quartz, the mica ( or hydromica ), diaspore,etc. in the impurity in the mineral .
Grainstones are the main part of the section, among which the oolites, intraclast limestones and most bioclast limestones are cemented by sparry calcite.
Under supergene process influencing, kaolinites invered dickites, siderite were been ferritization, part of carbonate mineral have been dissoluted producing calcite.
" The inside looks like a crystal cave because the limestone has leaked calcite into little stalactites, " says Lin, who entered the tomb and used lidar (light detection and ranging) to explore it on the show.
The example you're looking at right now is calcite, and when you're seeing double, it's because light with one polarization is getting bent at a different rate than light with the other polarization.
He dimly recalls the subtle variations in texture, the distinctive calcite deposits that run up the length of the wall, stretching up, up, to a small window in the rock.